Scag Power Equipment SFZ61-28BS, SFZ36-20BS Cutter Blades, Blade Inspection, Blade Replacement

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Section 7

R

7.8 CUTTER BLADES

A. Blade Inspection

1.Remove the ignition key before servicing the blades.

2.Raise the mower deck to the highest position. Place the lanyard pin in the highest cutting height position to prevent the cutter deck from falling.

WARNING

Always wear proper hand and eye protection when working with cutter blades.

3.Check the cutter blades for straightness. If the cutter blades appear bent, they will need to be replaced.

Angle Blade Back

Do Not Cut In

		X Must NOT Exceed
	30	1/3 Blade Width
	30	SGB033
		SGB033

Figure 7-8. Blade Sharpening

2.Check the balance of the blade. If the blades are out of balance, vibration and premature wear can occur. See your authorized Scag dealer for blade balancing or special tools, if you choose to balance your own blades.

C. Blade Replacement

WARNING

Do not attempt to straighten a bent blade, and never weld a broken or cracked blade. Always replace it with a new blade to assure safety.

4.If a blade cutting edge is dull or nicked, it should be sharpened. Remove the blades for sharpening. See "Blade Replacement."

- NOTE -

Keep the blades sharp. Cutting with dull blades not only yields a poor mowing job, but slows the cutting speed of the mower and causes extra wear on the engine and the blade drive by pulling hard.

B. Blade Sharpening

- NOTE -

If possible, use a file to sharpen the blade. Using a wheel grinder may burn the blade.

- NOTE -

WARNING

Always wear proper hand and eye protection when working with cutter blades.

1.Remove the ignition key before replacing the blades.

2.Raise the mower deck to the highest position. Place the lanyard pin in the highest cutting height position to prevent the cutter deck from falling.

3.Secure the cutter blades to prevent them from rotating, (use the optional Blade Buddy tool P/N 9212, to assist in securing the cutter blades), remove the blade attaching bolt. Remove the cutter blade, bolt, lockwasher and flatwasher from the spindle shaft. See Figure 7-9.

4.To install the new cutter blade, put the lockwaher and flatwasher onto the blade bolt and slide the bolt into the hole in the cutter blade.

DO NOT sharpen the blades beyond 1/3 of the width of the blade. See Figure 7-8.

1.Sharpen the cutting edge at the same bevel as the original. See Figure 7-8. Sharpen only the top of the cutting edge to maintain sharpness.

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Contents OPERATOR’S Manual Remember Your Mower is only AS Safe AS the Operator Table of Contents Adjustments Limited warranty sfz Following sectionIntroduction General InformationDirection Reference Servicing The Engine and Drive Train ComponentsSTT Models SymbolsSignal Words Safety InformationThis symbol means Attention! Become Alert! Your Signal WordOperation Considerations Section Seat Belt Inspection Roll-over protection systemUsing a spark arrestor Maintenance Considerations & storage483633 Safety and Instructional DecalsEngine SpecificationsElectrical TractorCutter Deck Weights and Dimensions 48/52Hydraulic System ProductivityControls and Instrument Operating InstructionsIdentification Engine Throttle Control -1. Used toInitial RUN-IN Procedures Safety Interlock SystemFirst Day of Use or Approximately 20 Hours Ground Travel and Steering Starting the EngineForward Travel Reverse Travel Engaging the Deck Drive Cutter BladesHillside Operation Rotating BladesAfter Operation Removing Clogged MaterialMoving Mower with Engine Stopped Adjusting Cutting HeightRecommendations for Mowing Towing optional hitch Accessory Not available for sfz36 Condition Cause Cure Troubleshooting Cutting ConditionsTroubleshooting Cutting Conditions Contd Dirt or CuttingVery Close To the Ground Scalping Blades HittingStep Cut Ridge in Center Cutting pathParking Brake Adjustment AdjustmentsNeutral Adjustment Travel AdjustmentsBelt Adjustment Throttle Control and Choke AdjustmentsTracking Adjustment Belt AlignmentCutter Deck Pitch Cutter Deck AdjustmentsCutter Deck Level Cutter Deck Height Cutter Deck Height AdjustmentClutch Air Gap Adjustment Electric clutch adjustmentMaintenance Chart Recommended Service Intervals MaintenanceProcedure Comments Break-In 100 200 400 First Changing Hydraulic Oil Checking Hydraulic Oil LevelChecking Engine Crankcase Oil Level Engine OilChanging Engine Crankcase Oil Changing Engine Oil Filter Engine Fuel SystemFilling the Fuel Tank Engine Air Cleaner BatteryCleaning and/or Replacing Air Cleaner Element Replacing In-Line Fuel Filter ElementsDrive Belts Charging the BatteryJump Starting Cutter Blades Blade ReplacementBlade Inspection Blade SharpeningBODY, DECK, and Upholstery TiresScag Approved Attachments and Accessories Illustrated Parts ListCutter Deck Description Cutter DeckSection 48, 52 & 61 Cutter Decks Flatwasher, 3/8-.391 x .938 x Cutter Deck Controls SFZ36 Ref. No Description Cutter Deck Controls SFZ48 & SFZ52 Cutter Deck Controls SFZ48 & SFZ52 Cutter Deck Controls SFZ61 Cutter Deck Controls SFZ61 Sheet Metal Components Flatwasher, 1/4-.312 x .750 x SFZ ROLL-OVER Protection System ROPS, SFZ36 Drive System Components SFZ36 Rod, Brake Adjustment Drive System Components SFZ48, SFZ52 & SFZ61 44162 Linkage, Dump Valve Fuel and Electrical System SFZ36 483672 Tank, LH Switch Clutch Engine Mount Bolt 483364 Tank, LH Fuel and Electrical System SFZ48, SFZ52 & SFZ61ZT-3100 Hydraulic Axle Assembly HG51462 ZT-3400 Hydraulic Axle Assembly -SFZ61 ZT-3400 Hydraulic Axle Assembly SFZ61 36COMMERCIAL Replacement Decals and Information PlatesReplacement Decals and Information Plates Optional Black Light RED Accessory Hourmeter Electrical SchematicLimited Warranty SFZ